Malicious PDF — malware analysis report

Static analysis result for SHA-256 26697265ae5026fd…

MALICIOUS

PDF

46.6 KB Created: 2021-06-07 23:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 943b0fbbbaf361388cbf1cd8e47360f7 SHA-1: 0c42bb56f2afc6e2d3049b05a4a55bb9c0dfe585 SHA-256: 26697265ae5026fdc061686bfa2498f73f14b3cce3930afd85cfd5230d47976e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hacks or generators. The document body and embedded URLs suggest a lure for free in-game items or cheats, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/free-spark-wings-on-roblox-game-hack In PDF document text
    • http://serviio.org/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/roblox-cash-hack_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/coin-master-today_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/how-to-hack-into-accounts-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/all-roblox-promo-codes-free-items_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005160.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5160 27112 bytes
SHA-256: 593ead8026679756169cec4110bab0769f7a7e5c8d479b79181b90c74335ac2c
font_01_sfnt_off000090fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FE 19128 bytes
SHA-256: 6ddb80d244736a51e8d6725ad8f09985b2fea8e37eb57240caba5172ebe14153

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